Abstract
DURING an investigation of the development of annual rings in trees, a few crystals of heteroauxin were placed in a 3/16-in. hole bored in a white pine (Pinus strobus L.) branch on June 30. The hole was sealed with a beeswax-‘Vaseline’ mixture. A comparable check branch on the same tree was bored and sealed, but with no heteroauxin inserted. These branches were cut on September 11.
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References
Wetmore, R. H., Stain. Tech., 7 (7), 37 (1932).
Johansen, D. A., “Plant Microtechnique’ (McGraw-Hill, N.Y., 1940).
Wershing, A., and Bailey, I. W., J. Forestry., 40 (1942).
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FRASER, D. Production of Spring Wood with β-Indole Acetic Acid (Heteroauxin). Nature 164, 542 (1949). https://doi.org/10.1038/164542a0
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DOI: https://doi.org/10.1038/164542a0
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